Yazan wants to buy his friend Keegan's old computer, but he currently has no money. He offers to pay Keegan $300 in a month at which time Keegan will give Yazan his computer. Keegan nods and says, "sure. thats a deal." Two weeks later, Yazan got paid from work and buys a new computer at Staples. Yazan then refuses to buy Keegan's computer. Which of the following statements is correct?

a) Yazan has breached the contract with keegan by refusing to buy his computer.

b) Keegan's action was not a full and unconditional acceptance and, therefore, there is no obligation on Yazan to buy Keegan's computer.

c) There was no contract, just an offer by Yazan since he did not have the money at the time, which he has no revoked.

d) Keegan may revoke his acceptance of Yazan's offer